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unix: add bindings for setattrlist() on macOS

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The setattrlist() function can be used to mutate the attributes of files through a single call. For example, one can perform a chmod(), chown(), chflags(), [...] all at once.

This change also adds bindings for the UF_* and SF_* flags that are accepted by chflags(). This makes it possible to use setattrlist() to perform the equivalent of lchflags(), for which we currently have no binding.

Change-Id: Ib5a604503a984b95a02b65ad1a437246cd170584
GitHub-Last-Rev: 45dd9d475aa72d628eaa4d06221adba6afd60278
GitHub-Pull-Request: golang/sys#155
Reviewed-on: https://go-review.googlesource.com/c/sys/+/481815
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Ed Schouten
2023-04-04 14:21:21 +00:00
committed by Gopher Robot
parent 90abad3705
commit 64840c112d
13 changed files with 125 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
unix/darwin_amd64_test.go
+1
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@@ -119,6 +119,7 @@ var darwinTests = [...]darwinTest{
{"sendfile", libc_sendfile_trampoline_addr},
{"sendmsg", libc_sendmsg_trampoline_addr},
{"sendto", libc_sendto_trampoline_addr},
{"setattrlist", libc_setattrlist_trampoline_addr},
{"setegid", libc_setegid_trampoline_addr},
{"seteuid", libc_seteuid_trampoline_addr},
{"setgid", libc_setgid_trampoline_addr},
unix/darwin_arm64_test.go
+1
View File
@@ -119,6 +119,7 @@ var darwinTests = [...]darwinTest{
{"sendfile", libc_sendfile_trampoline_addr},
{"sendmsg", libc_sendmsg_trampoline_addr},
{"sendto", libc_sendto_trampoline_addr},
{"setattrlist", libc_setattrlist_trampoline_addr},
{"setegid", libc_setegid_trampoline_addr},
{"seteuid", libc_seteuid_trampoline_addr},
{"setgid", libc_setgid_trampoline_addr},
unix/mkerrors.sh
+2
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@@ -66,6 +66,7 @@ includes_Darwin='
#include <sys/ptrace.h>
#include <sys/select.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/un.h>
#include <sys/sockio.h>
#include <sys/sys_domain.h>
@@ -521,6 +522,7 @@ ccflags="$@"
$2 ~ /^NFC_(GENL|PROTO|COMM|RF|SE|DIRECTION|LLCP|SOCKPROTO)_/ ||
$2 ~ /^NFC_.*_(MAX)?SIZE$/ ||
$2 ~ /^RAW_PAYLOAD_/ ||
$2 ~ /^[US]F_/ ||
$2 ~ /^TP_STATUS_/ ||
$2 ~ /^FALLOC_/ ||
$2 ~ /^ICMPV?6?_(FILTER|SEC)/ ||
unix/syscall_darwin.go
+1 -1
View File
@@ -613,6 +613,7 @@ func SysctlKinfoProcSlice(name string, args ...int) ([]KinfoProc, error) {
//sys Rmdir(path string) (err error)
//sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK
//sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error)
//sys Setattrlist(path string, attrlist *Attrlist, attrBuf []byte, options int) (err error)
//sys Setegid(egid int) (err error)
//sysnb Seteuid(euid int) (err error)
//sysnb Setgid(gid int) (err error)
@@ -675,7 +676,6 @@ func SysctlKinfoProcSlice(name string, args ...int) ([]KinfoProc, error) {
// Kqueue_from_portset_np
// Kqueue_portset
// Getattrlist
// Setattrlist
// Getdirentriesattr
// Searchfs
// Delete
unix/types_darwin.go
+2
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@@ -140,6 +140,8 @@ type Fsid C.struct_fsid
type Dirent C.struct_dirent
type Attrlist C.struct_attrlist
// File system limits
const (
unix/zerrors_darwin_amd64.go
+19
View File
@@ -1270,6 +1270,16 @@ const (
SEEK_END = 0x2
SEEK_HOLE = 0x3
SEEK_SET = 0x0
SF_APPEND = 0x40000
SF_ARCHIVED = 0x10000
SF_DATALESS = 0x40000000
SF_FIRMLINK = 0x800000
SF_IMMUTABLE = 0x20000
SF_NOUNLINK = 0x100000
SF_RESTRICTED = 0x80000
SF_SETTABLE = 0x3fff0000
SF_SUPPORTED = 0x9f0000
SF_SYNTHETIC = 0xc0000000
SHUT_RD = 0x0
SHUT_RDWR = 0x2
SHUT_WR = 0x1
@@ -1543,6 +1553,15 @@ const (
TIOCTIMESTAMP = 0x40107459
TIOCUCNTL = 0x80047466
TOSTOP = 0x400000
UF_APPEND = 0x4
UF_COMPRESSED = 0x20
UF_DATAVAULT = 0x80
UF_HIDDEN = 0x8000
UF_IMMUTABLE = 0x2
UF_NODUMP = 0x1
UF_OPAQUE = 0x8
UF_SETTABLE = 0xffff
UF_TRACKED = 0x40
VDISCARD = 0xf
VDSUSP = 0xb
VEOF = 0x0
unix/zerrors_darwin_arm64.go
+19
View File
@@ -1270,6 +1270,16 @@ const (
SEEK_END = 0x2
SEEK_HOLE = 0x3
SEEK_SET = 0x0
SF_APPEND = 0x40000
SF_ARCHIVED = 0x10000
SF_DATALESS = 0x40000000
SF_FIRMLINK = 0x800000
SF_IMMUTABLE = 0x20000
SF_NOUNLINK = 0x100000
SF_RESTRICTED = 0x80000
SF_SETTABLE = 0x3fff0000
SF_SUPPORTED = 0x9f0000
SF_SYNTHETIC = 0xc0000000
SHUT_RD = 0x0
SHUT_RDWR = 0x2
SHUT_WR = 0x1
@@ -1543,6 +1553,15 @@ const (
TIOCTIMESTAMP = 0x40107459
TIOCUCNTL = 0x80047466
TOSTOP = 0x400000
UF_APPEND = 0x4
UF_COMPRESSED = 0x20
UF_DATAVAULT = 0x80
UF_HIDDEN = 0x8000
UF_IMMUTABLE = 0x2
UF_NODUMP = 0x1
UF_OPAQUE = 0x8
UF_SETTABLE = 0xffff
UF_TRACKED = 0x40
VDISCARD = 0xf
VDSUSP = 0xb
VEOF = 0x0
unix/zsyscall_darwin_amd64.go
+25
View File
@@ -1992,6 +1992,31 @@ var libc_select_trampoline_addr uintptr
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Setattrlist(path string, attrlist *Attrlist, attrBuf []byte, options int) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
if err != nil {
return
}
var _p1 unsafe.Pointer
if len(attrBuf) > 0 {
_p1 = unsafe.Pointer(&attrBuf[0])
} else {
_p1 = unsafe.Pointer(&_zero)
}
_, _, e1 := syscall_syscall6(libc_setattrlist_trampoline_addr, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(attrlist)), uintptr(_p1), uintptr(len(attrBuf)), uintptr(options), 0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
var libc_setattrlist_trampoline_addr uintptr
//go:cgo_import_dynamic libc_setattrlist setattrlist "/usr/lib/libSystem.B.dylib"
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Setegid(egid int) (err error) {
_, _, e1 := syscall_syscall(libc_setegid_trampoline_addr, uintptr(egid), 0, 0)
if e1 != 0 {
unix/zsyscall_darwin_amd64.s
+5
View File
@@ -705,6 +705,11 @@ TEXT libc_select_trampoline<>(SB),NOSPLIT,$0-0
GLOBL ·libc_select_trampoline_addr(SB), RODATA, $8
DATA ·libc_select_trampoline_addr(SB)/8, $libc_select_trampoline<>(SB)
TEXT libc_setattrlist_trampoline<>(SB),NOSPLIT,$0-0
JMP libc_setattrlist(SB)
GLOBL ·libc_setattrlist_trampoline_addr(SB), RODATA, $8
DATA ·libc_setattrlist_trampoline_addr(SB)/8, $libc_setattrlist_trampoline<>(SB)
TEXT libc_setegid_trampoline<>(SB),NOSPLIT,$0-0
JMP libc_setegid(SB)
unix/zsyscall_darwin_arm64.go
+25
View File
@@ -1992,6 +1992,31 @@ var libc_select_trampoline_addr uintptr
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Setattrlist(path string, attrlist *Attrlist, attrBuf []byte, options int) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
if err != nil {
return
}
var _p1 unsafe.Pointer
if len(attrBuf) > 0 {
_p1 = unsafe.Pointer(&attrBuf[0])
} else {
_p1 = unsafe.Pointer(&_zero)
}
_, _, e1 := syscall_syscall6(libc_setattrlist_trampoline_addr, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(attrlist)), uintptr(_p1), uintptr(len(attrBuf)), uintptr(options), 0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
var libc_setattrlist_trampoline_addr uintptr
//go:cgo_import_dynamic libc_setattrlist setattrlist "/usr/lib/libSystem.B.dylib"
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Setegid(egid int) (err error) {
_, _, e1 := syscall_syscall(libc_setegid_trampoline_addr, uintptr(egid), 0, 0)
if e1 != 0 {
unix/zsyscall_darwin_arm64.s
+5
View File
@@ -705,6 +705,11 @@ TEXT libc_select_trampoline<>(SB),NOSPLIT,$0-0
GLOBL ·libc_select_trampoline_addr(SB), RODATA, $8
DATA ·libc_select_trampoline_addr(SB)/8, $libc_select_trampoline<>(SB)
TEXT libc_setattrlist_trampoline<>(SB),NOSPLIT,$0-0
JMP libc_setattrlist(SB)
GLOBL ·libc_setattrlist_trampoline_addr(SB), RODATA, $8
DATA ·libc_setattrlist_trampoline_addr(SB)/8, $libc_setattrlist_trampoline<>(SB)
TEXT libc_setegid_trampoline<>(SB),NOSPLIT,$0-0
JMP libc_setegid(SB)
unix/ztypes_darwin_amd64.go
+10
View File
@@ -151,6 +151,16 @@ type Dirent struct {
_ [3]byte
}
type Attrlist struct {
Bitmapcount uint16
Reserved uint16
Commonattr uint32
Volattr uint32
Dirattr uint32
Fileattr uint32
Forkattr uint32
}
const (
PathMax = 0x400
)
unix/ztypes_darwin_arm64.go
+10
View File
@@ -151,6 +151,16 @@ type Dirent struct {
_ [3]byte
}
type Attrlist struct {
Bitmapcount uint16
Reserved uint16
Commonattr uint32
Volattr uint32
Dirattr uint32
Fileattr uint32
Forkattr uint32
}
const (
PathMax = 0x400
)